diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 3a604bf66c8..fc8c0c19c59 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -62,9 +62,9 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="8.0.0-beta.25208.7">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="8.0.0-beta.25264.2">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>c7a36e53f91e41943746f97a8c183549364c5092</Sha>
+      <Sha>983d15077d88cfed26837e40e8f984fdee5d1715</Sha>
       <SourceBuild RepoName="arcade" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.DotNet.XliffTasks" Version="1.0.0-beta.23475.1" CoherentParentDependency="Microsoft.DotNet.Arcade.Sdk">
@@ -81,9 +81,9 @@
       <Sha>dc3d0694a4b31b8e27038431888cd4e8dd5b6cb6</Sha>
       <SourceBuild RepoName="roslyn" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.XUnitExtensions" Version="8.0.0-beta.25208.7">
+    <Dependency Name="Microsoft.DotNet.XUnitExtensions" Version="8.0.0-beta.25264.2">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>c7a36e53f91e41943746f97a8c183549364c5092</Sha>
+      <Sha>983d15077d88cfed26837e40e8f984fdee5d1715</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>
diff --git a/eng/Versions.props b/eng/Versions.props
index 367f906bc2a..c7715c6964d 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -2,7 +2,7 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the MIT license. See License.txt in the project root for full license information. -->
 <Project>
   <PropertyGroup>
-    <VersionPrefix>17.8.26</VersionPrefix>
+    <VersionPrefix>17.8.27</VersionPrefix>
     <DotNetFinalVersionKind>release</DotNetFinalVersionKind>
     <PackageValidationBaselineVersion>17.7.0</PackageValidationBaselineVersion>
     <AssemblyVersion>15.1.0.0</AssemblyVersion>
@@ -49,7 +49,7 @@
          Otherwise, this version of dotnet will not be installed and the build will error out. -->
     <DotNetCliVersion>$([System.Text.RegularExpressions.Regex]::Match($([System.IO.File]::ReadAllText('$(MSBuildThisFileDirectory)..\global.json')), '"dotnet": "([^"]*)"').Groups.get_Item(1))</DotNetCliVersion>
     <MicrosoftCodeAnalysisCollectionsVersion>4.2.0-1.22102.8</MicrosoftCodeAnalysisCollectionsVersion>
-    <MicrosoftDotNetXUnitExtensionsVersion>8.0.0-beta.25208.7</MicrosoftDotNetXUnitExtensionsVersion>
+    <MicrosoftDotNetXUnitExtensionsVersion>8.0.0-beta.25264.2</MicrosoftDotNetXUnitExtensionsVersion>
     <MicrosoftExtensionsDependencyModelVersion>7.0.0</MicrosoftExtensionsDependencyModelVersion>
     <MicrosoftIORedistVersion>6.0.1</MicrosoftIORedistVersion>
     <MicrosoftNetCompilersToolsetVersion>4.8.0-3.23465.5</MicrosoftNetCompilersToolsetVersion>
diff --git a/eng/common/sdl/packages.config b/eng/common/sdl/packages.config
index 4585cfd6bba..e5f543ea68c 100644
--- a/eng/common/sdl/packages.config
+++ b/eng/common/sdl/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Microsoft.Guardian.Cli" version="0.109.0"/>
+  <package id="Microsoft.Guardian.Cli" version="0.199.0"/>
 </packages>
diff --git a/eng/common/templates-official/job/source-build.yml b/eng/common/templates-official/job/source-build.yml
index f983033bb02..4217d6d8b14 100644
--- a/eng/common/templates-official/job/source-build.yml
+++ b/eng/common/templates-official/job/source-build.yml
@@ -54,7 +54,7 @@ jobs:
     pool:
       ${{ if eq(variables['System.TeamProject'], 'public') }}:
         name: $[replace(replace(eq(contains(coalesce(variables['System.PullRequest.TargetBranch'], variables['Build.SourceBranch'], 'refs/heads/main'), 'release'), 'true'), True, 'NetCore-Svc-Public' ), False, 'NetCore-Public')]
-        demands: ImageOverride -equals Build.Ubuntu.1804.Amd64.Open
+        demands: ImageOverride -equals Build.Ubuntu.2204.Amd64.Open
 
       ${{ if eq(variables['System.TeamProject'], 'internal') }}:
         name: $[replace(replace(eq(contains(coalesce(variables['System.PullRequest.TargetBranch'], variables['Build.SourceBranch'], 'refs/heads/main'), 'release'), 'true'), True, 'NetCore1ESPool-Svc-Internal'), False, 'NetCore1ESPool-Internal')]
diff --git a/eng/common/templates-official/job/source-index-stage1.yml b/eng/common/templates-official/job/source-index-stage1.yml
index 60dfb6b2d1c..fb632b71a25 100644
--- a/eng/common/templates-official/job/source-index-stage1.yml
+++ b/eng/common/templates-official/job/source-index-stage1.yml
@@ -1,7 +1,7 @@
 parameters:
   runAsPublic: false
-  sourceIndexUploadPackageVersion: 2.0.0-20240502.12
-  sourceIndexProcessBinlogPackageVersion: 1.0.1-20240129.2
+  sourceIndexUploadPackageVersion: 2.0.0-20250425.2
+  sourceIndexProcessBinlogPackageVersion: 1.0.1-20250425.2
   sourceIndexPackageSource: https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json
   sourceIndexBuildCommand: powershell -NoLogo -NoProfile -ExecutionPolicy Bypass -Command "eng/common/build.ps1 -restore -build -binarylog -ci"
   preSteps: []
diff --git a/eng/common/templates-official/jobs/source-build.yml b/eng/common/templates-official/jobs/source-build.yml
index 5cf6a269c0b..b9247be1547 100644
--- a/eng/common/templates-official/jobs/source-build.yml
+++ b/eng/common/templates-official/jobs/source-build.yml
@@ -14,7 +14,7 @@ parameters:
   # This is the default platform provided by Arcade, intended for use by a managed-only repo.
   defaultManagedPlatform:
     name: 'Managed'
-    container: 'mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream8'
+    container: 'mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream-9-amd64'
 
   # Defines the platforms on which to run build jobs. One job is created for each platform, and the
   # object in this array is sent to the job template as 'platform'. If no platforms are specified,
diff --git a/eng/common/templates/job/source-build.yml b/eng/common/templates/job/source-build.yml
index c0ff472b697..c48f95d93d9 100644
--- a/eng/common/templates/job/source-build.yml
+++ b/eng/common/templates/job/source-build.yml
@@ -54,11 +54,11 @@ jobs:
     pool:
       ${{ if eq(variables['System.TeamProject'], 'public') }}:
         name: $[replace(replace(eq(contains(coalesce(variables['System.PullRequest.TargetBranch'], variables['Build.SourceBranch'], 'refs/heads/main'), 'release'), 'true'), True, 'NetCore-Svc-Public' ), False, 'NetCore-Public')]
-        demands: ImageOverride -equals Build.Ubuntu.1804.Amd64.Open
+        demands: ImageOverride -equals Build.Ubuntu.2204.Amd64.Open
 
       ${{ if eq(variables['System.TeamProject'], 'internal') }}:
         name: $[replace(replace(eq(contains(coalesce(variables['System.PullRequest.TargetBranch'], variables['Build.SourceBranch'], 'refs/heads/main'), 'release'), 'true'), True, 'NetCore1ESPool-Svc-Internal'), False, 'NetCore1ESPool-Internal')]
-        demands: ImageOverride -equals Build.Ubuntu.1804.Amd64
+        demands: ImageOverride -equals Build.Ubuntu.2204.Amd64
 
   ${{ if ne(parameters.platform.pool, '') }}:
     pool: ${{ parameters.platform.pool }}
diff --git a/eng/common/templates/job/source-index-stage1.yml b/eng/common/templates/job/source-index-stage1.yml
index 0b6bb89dc78..8538f44bab2 100644
--- a/eng/common/templates/job/source-index-stage1.yml
+++ b/eng/common/templates/job/source-index-stage1.yml
@@ -1,7 +1,7 @@
 parameters:
   runAsPublic: false
-  sourceIndexUploadPackageVersion: 2.0.0-20240502.12
-  sourceIndexProcessBinlogPackageVersion: 1.0.1-20240129.2
+  sourceIndexUploadPackageVersion: 2.0.0-20250425.2
+  sourceIndexProcessBinlogPackageVersion: 1.0.1-20250425.2
   sourceIndexPackageSource: https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json
   sourceIndexBuildCommand: powershell -NoLogo -NoProfile -ExecutionPolicy Bypass -Command "eng/common/build.ps1 -restore -build -binarylog -ci"
   preSteps: []
diff --git a/eng/common/templates/jobs/source-build.yml b/eng/common/templates/jobs/source-build.yml
index 5f46bfa895c..3ec99710810 100644
--- a/eng/common/templates/jobs/source-build.yml
+++ b/eng/common/templates/jobs/source-build.yml
@@ -14,7 +14,7 @@ parameters:
   # This is the default platform provided by Arcade, intended for use by a managed-only repo.
   defaultManagedPlatform:
     name: 'Managed'
-    container: 'mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream8'
+    container: 'mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream-9-amd64'
 
   # Defines the platforms on which to run build jobs. One job is created for each platform, and the
   # object in this array is sent to the job template as 'platform'. If no platforms are specified,
diff --git a/global.json b/global.json
index e14af9bc997..8a261f30d42 100644
--- a/global.json
+++ b/global.json
@@ -3,13 +3,13 @@
     "allowPrerelease": true
   },
   "tools": {
-    "dotnet": "8.0.115",
+    "dotnet": "8.0.116",
     "vs": {
       "version": "17.8.0"
     },
     "xcopy-msbuild": "17.8.5"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "8.0.0-beta.25208.7"
+    "Microsoft.DotNet.Arcade.Sdk": "8.0.0-beta.25264.2"
   }
 }